My husband has CRPS from a bicep tendon repair surgery it has spread from right arm to left arm to both feet and legs up to the knees over the past 2.5 years. We did not have the option of the injections in a timely manner. I believe that it is important to get aggressive with the treatment right away the longer you wait the more you chances lessen for some type of relief. I have studied this disease for years if there is the slightest chance you might have it get after the ganglion injections. It is a miserable disease and has totally disabled him. His was a work comp injury so any type of treatment took for ever to have approved. we have been through injections, many many medications and a spinal chord stimulator. I wish you the most of luck. I believe aggressive action if you can even find a physician that understands the disease